Amman is Jordan's capital city. It is built on seven mountains and has a fresh atmosphere and cool nights because of high altitude. Amman is a busy commercial center for Jordan with trendy boutiques and colorful bazaars. It is totally modern with many fine hotels and restaurants, entertainment, and sports.
In biblical times, Amman was known as Rabbath Ammon and under Ptolemies, as Philadelphia. It was taken by King Herod in 30 BC and became part of the Roman Empire and a member of the Decapolis, a dynamic commercial league of ten cities.

 

The Citidel- A significant site in Amman, here excavations reveal remains from the Early Middle and Late Bronze Age and the Iron Age. Also are remains from the Hellenistic and late Roman through the Arab Islamic ages. It features the Temple of Hercules, an Omayyad Palace dating 720 AD, which was during the rule of the Omayyad Arabs. It features a huge gateway, an audience hall, a vaulted complex and a Byzantine church from the 6th century.
Roman Amphitheater- The amphitheater is beautifully restored and stands as a legacy of Roman Philadelphia. It was built under Antonius Pius. There is a forum to the front added under Commodius. The amphitheater once seated 6,000 people. It is used often for sporting or theater events. Within the complex is the Costume and Folklore Museum. In the same vicinity of the Citadel, see the National Archaeological Museum.
The Nymphium- This is one of many in Jordan. It is an ornamental fountain completed in 191 AD and dedicated to water nymphs believed to live around streams and lakes. 

King Hussein Mosque- The mosque was built by King Abdullah in 1924, on the remains of a mosque built in 640 AD by 'Umar bin al-Khatab, the second caliph of Islam. It was restored in 1987 by King Hussein.
King Abdullah Mosque - This mosque was completed in 1990 in memory of King Hussein's grandfather. It is also called the Blue Dome Mosque because of the sky blue exterior. See inside The Islamic Museum.
Cave of the Prince -These are eleven caves carved into the cliff face. Look to the bottom 10 kilometers down.
Slaves' Castle - This is a mysterious, enormous palace built by Hyrcanus of the powerful Tobiad family during 2nd century AD. It features an Arabic inscription at the entrance, very significant for historians. It is located in Iraq al-Amir, one of the five villages benefiting from Noor al-Hussien Foundation’s comprehensive  socio-economic development project.  See 10 farmhouses overlooking the ancient palace, renovated and transformed to a handicraft village.  The farmhouses became a weaving center, est. 1993  to  improve & develop existing production techniques of hand woven cloth, also is the Ceramic Production & Training Center & a Paper Making Project.
Salt - Salt was once the capital of Jordan. There are wonderful houses from the Ottoman period with long arched windows. Stop for a break and take in the ancient natural beauty of the Shu'aib Valley. Enjoy Arabic pastries in a coffeeshop and browse for ceramics, weaving, and silk screen near the Archaeological Museum. In the evening, dine in a traditional atmosphere with traditional entertainment.